IMPORTANT! GOES-8 Return

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: IMPORTANT! GOES-8 Return
• From: jhawkins@xxxxxxxxxxxxxxx (Jamie Hawkins)
• Date: Fri, 10 Jan 1997 15:47:07 +0500

NOAA/NESDIS plans to begin L2 back-up momentum wheel configuration taking 
     GOES-8 out of safe hold condition around 4:30 pm EST (2130 UTC) today.  
     Following the reconfiguration, GOES-8 imager and sounder GVAR data flow 
     should be restored sometime tonight between 9:00 pm and Midnight EST
(0200 - 0500 UTC, January 11).
     
     Due to the lengthy outage, users should note that it may take up to 48 
     hours for full navigation and registration recovery.  NESDIS will closely 
     monitor and evaluate GOES-8 data after it begins to flow, maintaining full 
     disk transmissions from GOES-9 until navigation and registration 
     performance has stabilized.  

[NOAA Product Users Note:  Both GOES-TAP and GINI/NOAAPort systems will
operate with contingency GOES-9 products covering the East until the GOES-8
data can be effectively used for NOAA operations.  Users will be notified of
the switch to a normal two GOES operation.]
     
     To facilitate navigation and registration recovery, a special schedule
will 
     be in effect for up to two days following the restoration of GOES-8 GVAR 
     data.  Specifically, the schedule will adhere to the following
transmission 
     times and sectors:
     
     Imaging
     
     HH15  Extended Northern Hemisphere images 
     HH45  Abbreviated full disk images (19 minute transmission)
     
Exception is 0415, 0515, 1015, 1115, 1615, 1715, 2215 & 2315 UTC when an
abbreviated full disk image will be transmitted.
     
     Sounding
     
     HH46 ASOS-1 sounder sector only
     
     NESDIS will notify users when routine GOES-8 scheduling is planned to be 
     implemented.
     
     John Paquette
     Satellite Services Division





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